package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.mapper.SystemUserMapper;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.atguigu.lease.web.admin.vo.system.user.SystemUserInfoVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.GifCaptcha;
import com.wf.captcha.SpecCaptcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

     @Autowired
    StringRedisTemplate stringRedisTemplate;

     @Autowired
    SystemUserMapper systemUserMapper;
    @Override
    public CaptchaVo getCaptcha() {
        //len： 验证码内容的个数
        //生成静态验证码的api
   /*     SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 5);*/
        // gif类型
        GifCaptcha specCaptcha = new GifCaptcha(130, 48,5);
        //验证码
        String verCode = specCaptcha.text().toLowerCase();

        //验证码的图片
        String img = specCaptcha.toBase64();
        //key: 当前验证码 保存到redis中的的key
        String key = UUID.randomUUID().toString();

        //redis保存验证码
        stringRedisTemplate.opsForValue().set(key,verCode, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);


        return new CaptchaVo(img,key);
    }

    @Override
    public String login(LoginVo loginVo) throws LeaseException {
        //判断验证码是否输入
         if(!StringUtils.hasText(loginVo.getCaptchaCode())){
                   throw  new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
         }
         //判断redis中的验证码是否过期
        String redisCode = stringRedisTemplate.opsForValue().get(loginVo.getCaptchaKey());
         if(redisCode==null){
             throw  new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
         }
         //判断验证码输入的是否正确
        if(!redisCode.equals(loginVo.getCaptchaCode())){
            throw  new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }

        //查询账号是否存在
        SystemUser systemUser = systemUserMapper.selectOne(new LambdaQueryWrapper<SystemUser>().eq(SystemUser::getUsername, loginVo.getUsername()));

        if(systemUser==null){
            throw  new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }

        //判断用户是否被禁用
        if(systemUser.getStatus()== BaseStatus.DISABLE){
            throw  new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }

        //比较密码是否正确
        //先对客户端输入的密码进行加密
        String pwd = DigestUtils.md5Hex(loginVo.getPassword());
        System.out.println(pwd);
        if(!systemUser.getPassword().equals(pwd)){
            throw  new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }

        //创建token
        String token = JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());

        return token;
    }

    @Override
    public SystemUserInfoVo getSystemUserInfoById(Long userId) {
        SystemUser systemUser = systemUserMapper.selectById(userId);
        SystemUserInfoVo systemUserInfoVo = new SystemUserInfoVo();
        systemUserInfoVo.setName(systemUser.getName());
        systemUserInfoVo.setAvatarUrl(systemUser.getAvatarUrl());
        return systemUserInfoVo;
    }
}
